Grain

Corn Bran

Health
ScoreB

Corn bran is the fibrous outer layer of corn kernels, exceptionally rich in dietary fiber (79g per 100g) and a concentrated source of plant-based nutrients. It serves as a functional food for digestive health and metabolic support.

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Why Corn Bran scores 73

Nutrient density16

Protein quality8

Fiber content10

Healthy fats5

Bioactive compounds11

Glycemic impact10

Top nutrients

% Daily Value per 1 oz (30 g)

Vitamin B6 11%Selenium 9.0%Copper 8.3%Niacin 5.1%Iron 4.6%

Nutrition

per_100g

224

Calories

8.4g

Protein

85.6g

Carbs

0.9g

Fat

79g

Fiber

Health benefits

Supports digestive health and colonic microbiota composition

strong evidence

Insoluble fiber acts as substrate for beneficial bacteria fermentation, producing short-chain fatty acids (butyrate) that maintain intestinal barrier integrity and reduce pathogenic colonization

Improves lipid profiles and reduces LDL cholesterol

moderate evidence

Soluble fiber components and plant polyphenols (ferulic acid) inhibit cholesterol absorption and enhance hepatic clearance of LDL particles

Moderates postprandial glucose response and supports insulin sensitivity

moderate evidence

High fiber content slows gastric emptying and reduces glucose absorption rate, diminishing postprandial blood glucose spikes and reducing pancreatic insulin demand

Provides antioxidant and anti-inflammatory support

emerging evidence

Phenolic compounds including ferulic acid and phytosterols scavenge reactive oxygen species and modulate inflammatory transcription factors (NF-κB pathway)

Supports mineral bioavailability and bone health signaling

moderate evidence

Phosphorus and magnesium ratio supports calcium regulation and osteoblast function; magnesium is essential for parathyroid hormone function

Pairs well with

·Pair with vitamin C-rich foods (citrus, kiwi, bell pepper) to enhance non-heme iron absorption from the 2.79mg iron per 100g
·Combine with fermented foods (kefir, yogurt, sauerkraut) to synergize prebiotic fiber with probiotic organisms for enhanced microbiota diversity
·Mix with fat sources (olive oil, nuts, seeds) to improve absorption of fat-soluble phenolic compounds and enhance palatability
·Consume with legumes (lentils, beans) to create complete protein profile and enhance fiber viscosity for superior glycemic control

Practical tips

·Best timing: Corn bran's primary benefits derive from fiber's effects on digestion and microbiota, which operate across 24-hour cycles. Morning consumption supports satiety and stable glucose throughout the day; evening consumption supports colonic fermentation during sleep. No circadian-dependent mechanisms limit timing.
·Start with 1-2 tablespoons daily and gradually increase to 3-4 tablespoons over 2 weeks to allow microbiota adaptation and minimize digestive distress
·Store in airtight containers in cool, dark conditions or refrigerate after opening to prevent oxidation of polyphenols and maintain fiber integrity
·Mix into oatmeal, smoothies, or yogurt rather than consuming dry to improve water absorption and reduce choking risk; ensure adequate fluid intake (8+ glasses daily)
·Select non-GMO, organically-sourced corn bran when possible to minimize pesticide residues and ensure ferulic acid preservation
·Consume with meals rather than on empty stomach to optimize nutrient absorption and minimize gastric irritation from concentrated fiber